[gtk-doc] mkdb: Also include index files when creating a default master

[Stefan Sauer <stefkost src gnome org>]

commit 7579c58cd091732d41d3229f7f52e0aa49df9cba
Author: Stefan Sauer <ensonic users sf net>
Date:   Fri Aug 4 17:32:17 2017 +0200

    mkdb: Also include index files when creating a default master
    
    This is probably rarely needed, since a new project won't have since docs.

 gtkdoc/mkdb.py           |   10 ++++++++++
 tests/empty/src/tester.h |    7 +++++++
 2 files changed, 17 insertions(+), 0 deletions(-)
---
diff --git a/gtkdoc/mkdb.py b/gtkdoc/mkdb.py
index 964a975..e892a3b 100644
--- a/gtkdoc/mkdb.py
+++ b/gtkdoc/mkdb.py
@@ -2441,6 +2441,8 @@ def OutputBook(main_file, book_top, book_bottom):
     if main_file and not os.path.exists(main_file):
         OUTPUT = open(main_file, 'w')
 
+        logging.info("no master doc, create default one at: " + main_file)
+
         OUTPUT.write('''%s
 <book id="index">
   <bookinfo>
@@ -2481,6 +2483,14 @@ def OutputBook(main_file, book_top, book_bottom):
     <xi:include href="xml/api-index-deprecated.xml"><xi:fallback /></xi:include>
   </index>
 ''')
+        for version in set(Since.values()):
+            dash_version = version.replace('.', '-')
+            OUTPUT.write('''  <index id="api-index-%s" role="%s">
+    <title>Index of new API in %s</title>
+    <xi:include href="xml/api-index-%s.xml"><xi:fallback /></xi:include>
+  </index>
+''' % (dash_version, version, version, version))
+
         if AnnotationsUsed:
             OUTPUT.write('''  <xi:include href="xml/annotation-glossary.xml"><xi:fallback /></xi:include>
 ''')
diff --git a/tests/empty/src/tester.h b/tests/empty/src/tester.h
index 23ab4ea..ed2ade6 100644
--- a/tests/empty/src/tester.h
+++ b/tests/empty/src/tester.h
@@ -4,6 +4,13 @@
 #include <glib.h>
 #include <glib-object.h>
 
+/**
+ * FOO:
+ * The FOO.
+ *
+ * Since: 0.1
+ */
+#define FOO "bar"
 
 void test (gint a);